1. It is suitable for dispensing operations with large glue volume; 2.The fluid contact part has a suck-back function, the liquid is not poured back, and there is glue to control the drawing. The glue is broken clean and there is no leakage; 3. The dispensing valve itself has the function of flow regulation; 4. The dispensing valve is made of stainless steel and anodized aluminum alloy, which has strong corrosion resistance;